Model by Anthropic

Claude Opus 4.7

Claude Opus 4.7 is Anthropic's April 2026 top-tier model for long-running agents, and it is now a legacy model: Anthropic points users to Opus 5.5.

Checked 2026-11-05

Claude Opus 4.7 is Anthropic's April 2026 top-tier model for long-running agents, and it is now a legacy model: Anthropic points users to Opus 5.5. It was released on 16 April 2026 with a 1M token context window and 128K tokens of output, and it takes text and images in. Anthropic lists it at $5 per million input tokens and $25 per million output tokens, the same as OpenRouter's listing as of 5 November 2026. Opus 5.5 is cheaper on the same page, at $4 and $20, with a June 2026 knowledge cutoff against January 2026 here. Retirement is not sooner than 16 April 2027, and the Batch API takes half off. A catch worth knowing: Anthropic says this model introduced a new tokenizer, so 1M tokens holds about 555k words, where earlier models held about 750k. The same text therefore uses more tokens than it did on Opus 4.6. We have not run it ourselves. We would use it only to keep an old pipeline stable, and move new agent work to a current Opus. Figures come from Anthropic's model page and OpenRouter's list.

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Questions

What is the context window of Claude Opus 4.7?

1,000,000 tokens, with up to 128,000 tokens of output.

How much does Claude Opus 4.7 cost?

$5 per million input tokens and $25 per million output tokens, checked 31 October 2026.

Can I run Claude Opus 4.7 on my own hardware?

No. The weights are not published, so you use it through the maker's API or a hosting provider.

Who makes Claude Opus 4.7?

Anthropic makes it, and released it on 16 April 2026.

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